I had implantation bleeding with my pregnancy, but it was only for one short spell that finished on the same day.
In saying that, I then had bright red bleeding a week later which was caused by an SCH, and had me bleeding/spotting for another 3 days.
As long as it is light bleeding, not filling a liner within a few hours and isn't accompanied by cramping you should be ok. But if you are really concerned, contact your doctor.
BTW: Implantation bleeding isn't TMI. Pregnancy and birth are subjects which have many areas that might seem TMI anywhere else but on a board specifically for these subjects, you are pretty safe. There are limits of course, but generally a bit of bleeding is pretty standard conversation here it seems.